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https://issues.apache.org/jira/browse/SPARK-55771?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kent Yao reassigned SPARK-55771:
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Assignee: Kent Yao
> Modernize progress bars using Bootstrap 5 Progress component
> ------------------------------------------------------------
>
> Key: SPARK-55771
> URL: https://issues.apache.org/jira/browse/SPARK-55771
> Project: Spark
> Issue Type: Sub-task
> Components: Web UI
> Affects Versions: 4.2.0
> Reporter: Kent Yao
> Assignee: Kent Yao
> Priority: Major
> Labels: pull-request-available
>
> UIUtils.scala (lines 448-486) and webui.css (lines 111-139) implement custom
> progress bars with complex inline styles, vendor prefixes (-moz-, -webkit-,
> -o-) for IE9 compatibility, and custom gradients.
> Replace with Bootstrap 5 Progress component:
> - Remove IE9 vendor prefix CSS (~30 lines in webui.css)
> - Simplify inline style generation in UIUtils.scala
> - Keep custom colors (progress-completed #3EC0FF, progress-started #A0DFFF)
> as CSS custom properties
> - Use BS5 progress-bar with aria-valuenow for better accessibility
> Part of SPARK-55760 (Spark Web UI Modernization)
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